- Inversion clouds -Just after Thanksgiving in 2013, visitors at the Grand Canyon noticed something weird — the canyon was rapidly filling up with a thick fog. Tourists were left in awe when the fog rolled into the park and eventually formed what looked like a waterfall of clouds. This weather anomaly is known as an inversion.

An inversion is caused by cold air remaining near the ground and warmer air moving over it. The inversion at the Grand Canyon started when a storm moved through just before the holiday, causing the ground to freeze. When the warmer air then moved through afterward, the beautiful inversion phenomenon took place. Rangers at the park confirmed that much smaller inversions occur fairly often, but the larger ones that fill up the entire Canyon only happen every ten years or so. This one lasted the whole day, with the fog only dissipating when it started getting dark.

Hawking's original synthesizer was created by a California-based company called Words Plus, which ran a speech program called Equalizer on an Apple II computer. Adapted to a portable system that could be mounted on a wheelchair, the program enabled Hawking to "speak" by using a hand clicker to choose words on a screen. After he eventually lost use of his hands, Hawking had an infrared switch mounted on his glasses that generated words by detecting cheek movement. He also had the communication technology overhauled by Intel, though he insisted on retaining the same robotic voice with its distinctly non-British accent he'd been using for three decades, as he considered it an indelible part of his identity.

John Lennon was one of the founding members of The Beatles, who had gone on to have worldwide success as a member of the band, and also as a peace activist. On December 8th 1980, Lennon was in New York City. As he was returning to his hotel that evening a man shouted his name. As Lennon turned around, the man shot Lennon four times. Lennon then stumbled into the hotel and collapsed. While this was taking place, the assassin Mark David Chapman dropped his weapon and sat on the street, waiting to be arrested. He was charged with murder and remains in prison to this day. His motivation for the murder is unclear.

I'd always thought of the Indus Valley Civilisation as having grown up where the weather was always warm, no battles with the elements or struggles for survival . . . then I was chatting to a taxi-driver whose family had just called.

James Cleveland "Jesse" Owens (September 12, 1913 – March 31, 1980) was an American track and field athlete and four-time Olympic gold medalist in the 1936 Games.

Owens specialized in the sprints and the long jump and was recognized in his lifetime as "perhaps the greatest and most famous athlete in track and field history". His achievement of setting three world records and tying another in less than an hour at the 1935 Big Ten track meet in Ann Arbor, Michigan, has been called "the greatest 45 minutes ever in sport" and has never been equalled. At the 1936 Summer Olympics in Berlin, Germany, Owens achieved international fame by winning four gold medals: 100 meters, 200 meters, long jump, and 4 × 100 meter relay. He was the most successful athlete at the Games and, as a black man, was credited with "single-handedly crushing Hitler's myth of Aryan supremacy", although he "wasn't invited to the White House to shake hands with the President, either".

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